Improvement in tilting chairs



H. S. HALE.

Tilting-Chair.

N.FEIERS, FHOTO-LI'THOGRAPNER. WASHINGTON, D, C.

UNITED STATES PATENT OFFICE.

HENRY S. HALE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN TILTING CHAIRS.

Specification forming part of Letters Patent No. 168,482, dated October 5, 1875; application filed July 14, 1875.

To all whom it may concern:

Be it known that I, HENRY S. HALE, of Philadelphia, Pennsylvania, have invented certain Improvements in Chairs with Tilting Seats, of which the following is a specification:

My invention relates to improvements in chairs having spring-seats which admit of being tilted. an early example of chairs of this class appearing in the patent of Peter Ten Eyck, No. 15,853, granted March 15, 1853; and the object of my invention is simplicity in the construction of chairs of this class-an object which I attain in the manner about to be described, reference being had to the accompanying drawing, in which- Figure 1 is a side view, partly in section, of my improved tilting chair; Fig. 2, a front of a portion of the same.

A, A and A represent the seat, arms, and back of the chair; and B, the legs, which are secured at their upper ends to a nut, D, the latter receiving the screw-stem E. To the upper end of this stem is secured a metal frame, consisting of four arms, a, a a and a, the two latter extending to the opposite edges of the seat A, to which they are secured, the arm a being curved slightlyupward,and extending half-way, or thereabout, toward the front edge of the seat, and the rear arm a being curved downward and backward, and terminating in a stop, b, as seen in Fig. 1. To the top of this frame, at or near the center of the same, is secured, by a yoke and nuts or other suitable means, a flat elastic bar, F, which extends from the front to the back edge of the seat, its ends being contained within socketed studs 01 d, secured to the under side of said seat, as shown in Fig. l. The spring bears on the rounded portion 6 of the arm a, and as the seat is tilted backward it is resisted by the bar, the rigidity of which increases in proportion to the angle assumed by the seat. The stop I) is so arranged that an ordinary backward movement of seat will not bring the stud 01 into contact with. the said stop; hence the backward movement of the seat, being under the control of the spring, will be easy and free from all disagreeable jars. I discontinue the front arm a of the frame at a point about halfway, or thereabont, between the center and front edge of the seat, thus allowing the spring to project beyond the said arm, the spring thus acting as a cushion to absorb the shock when the front edge of the seat is depressed.

I do not desire to claim, broadly, a chair having a spring-seat capable of being tilted and restricted in its tilting movement, as this .is shown in the aforesaid patent of Ten Eyck, patented March 15, 1853; but

I claim as my invention The combination, in a chair with a tilting seat, of a spring-bar, F, attached to the seat and to the support of the same, with the long rear arm a and its stop I), and the short front arm a, all as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY S. HALE. Witnesses:

EDWARD H. EcKFELDT, HARRY SMITH. 

